re: Squirrels chewing wires in vehicles.

I once saw a mouse in my pickup. A few weeks later, while driving, I thought I smelled a faint smell of burning leaves.
Then I needed to move some of my sons belongings to his home about fifty miles away. I thought of the burning leaves smell, so I parked my truck fifty feet away from the house and let it idle while I gathered his junk. I saw no problem, so I loaded up his stuff and headed out. It was a warm day so I turned on the ventilation fan. In a few minutes smoke started coming out of the vent. I urned up the fan speed, to ventilate the truck, like a fool, and headed to a phone booth about a mile a head. I stopped to call the Fire Dept. By the time I contacted the Fire Dept. the truck was an inferno.
When contacted by my Insurance agent, the lady wanted to know how it happened. I explained the "Mouse Incident" and she said, "I hope the little mouse escaped. I replied, I hope the bastard roasted. Her reply, "Oh"!
It seems as if the mouse chewed some insulation off the Vent Fan electrical wire, while building a nest. When I turned on the fan it ignited.